Original Q-Jet Mounting Bolts

[jim68]

Does anyone know what the proper carb mounting bolt head markings should be for 67 and 68 Camaro 350 engines with a Q-Jet?
I think the 67 has studs on the rear and 68 has bolts on the rear.
Thanks.

[1968RSZ28]

I'm sure there are different suppliers for these bolts, therefore there will be different head markings.  I have a few '68 Q-Jets I pulled back in the eighties and the front mounting bolts have a small, capital "A" on the head.

Paul